dridex | 4ac846154d1f91c30a373dc364d880d7f36b0d1f23edbf8e854b38b804db7549

General

Target

4ac846154d1f91c30a373dc364d880d7f36b0d1f23edbf8e854b38b804db7549.dll
Size

700KB
MD5

bfbcb9e4b4723629dda33d1406a87d3a
SHA1

d342007297faf30e3cd1a703b31287e735470858
SHA256

4ac846154d1f91c30a373dc364d880d7f36b0d1f23edbf8e854b38b804db7549
SHA512

d0679c2dead14ccc998bf6ae31c79e3e4570a345401374a099e2feb3252eb1a2a2159b559a0963523f39e4080d6ecf672d2c397c12cdce7d1a142c7eb81afd41
SSDEEP

12288:dEwgKnIhABTW0HcD5a1PKxdZhC+k+V9Hgeb/tf/B9P632vHAA:dEwXnOAx5HcDM1Sxd3ChCHg2/P9yGo

Score

10^/10

dridex botnet evasion payload persistence privilege_escalation trojan

Malware Config

Signatures

Dridex
Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.
botnet dridex

Dridex Shellcode 1 IoCs

Detects Dridex Payload shellcode injected in Explorer process.

botnet payload

Processes:

resource	yara_rule
behavioral1/memory/1200-4-0x0000000002EA0000-0x0000000002EA1000-memory.dmp	dridex_stager_shellcode

Dridex payload 9 IoCs

Detects Dridex x64 core DLL in memory.

botnet payload

Processes:

resource	yara_rule
behavioral1/memory/2128-0-0x0000000140000000-0x00000001400AF000-memory.dmp	dridex_payload
behavioral1/memory/1200-24-0x0000000140000000-0x00000001400AF000-memory.dmp	dridex_payload
behavioral1/memory/1200-37-0x0000000140000000-0x00000001400AF000-memory.dmp	dridex_payload
behavioral1/memory/1200-36-0x0000000140000000-0x00000001400AF000-memory.dmp	dridex_payload
behavioral1/memory/2128-44-0x0000000140000000-0x00000001400AF000-memory.dmp	dridex_payload
behavioral1/memory/2872-54-0x0000000140000000-0x00000001400B0000-memory.dmp	dridex_payload
behavioral1/memory/2872-58-0x0000000140000000-0x00000001400B0000-memory.dmp	dridex_payload
behavioral1/memory/2164-74-0x0000000140000000-0x00000001400B0000-memory.dmp	dridex_payload
behavioral1/memory/1988-90-0x0000000140000000-0x00000001400B0000-memory.dmp	dridex_payload

Executes dropped EXE 3 IoCs

Processes:

rekeywiz.exespreview.exeDisplaySwitch.exe

pid process

2872 rekeywiz.exe
2164 spreview.exe
1988 DisplaySwitch.exe
Loads dropped DLL 7 IoCs

Processes:

rekeywiz.exespreview.exeDisplaySwitch.exe

pid process

1200
2872 rekeywiz.exe
1200
2164 spreview.exe
1200
1988 DisplaySwitch.exe
1200

pid	process
2872	rekeywiz.exe
2164	spreview.exe
1988	DisplaySwitch.exe

pid	process
1200
2872	rekeywiz.exe
1200
2164	spreview.exe
1200
1988	DisplaySwitch.exe
1200

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\Gazvzzjnt = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\00xX\\spreview.exe"

Checks whether UAC is enabled 1 TTPs 4 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

rundll32.exerekeywiz.exespreview.exeDisplaySwitch.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rekeywiz.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	spreview.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	DisplaySwitch.exe

Event Triggered Execution: Accessibility Features 1 TTPs
Windows contains accessibility features that may be used by adversaries to establish persistence and/or elevate privileges.
persistence privilege_escalation

Accessibility Features
T1546.008

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

rundll32.exe

pid	process
2128	rundll32.exe
2128	rundll32.exe
2128	rundll32.exe
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Suspicious use of WriteProcessMemory 18 IoCs

Processes:

description	pid	target process
PID 1200 wrote to memory of 2868	1200	rekeywiz.exe
PID 1200 wrote to memory of 2868	1200	rekeywiz.exe
PID 1200 wrote to memory of 2868	1200	rekeywiz.exe
PID 1200 wrote to memory of 2872	1200	rekeywiz.exe
PID 1200 wrote to memory of 2872	1200	rekeywiz.exe
PID 1200 wrote to memory of 2872	1200	rekeywiz.exe
PID 1200 wrote to memory of 2532	1200	spreview.exe
PID 1200 wrote to memory of 2532	1200	spreview.exe
PID 1200 wrote to memory of 2532	1200	spreview.exe
PID 1200 wrote to memory of 2164	1200	spreview.exe
PID 1200 wrote to memory of 2164	1200	spreview.exe
PID 1200 wrote to memory of 2164	1200	spreview.exe
PID 1200 wrote to memory of 1816	1200	DisplaySwitch.exe
PID 1200 wrote to memory of 1816	1200	DisplaySwitch.exe
PID 1200 wrote to memory of 1816	1200	DisplaySwitch.exe
PID 1200 wrote to memory of 1988	1200	DisplaySwitch.exe
PID 1200 wrote to memory of 1988	1200	DisplaySwitch.exe
PID 1200 wrote to memory of 1988	1200	DisplaySwitch.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ac846154d1f91c30a373dc364d880d7f36b0d1f23edbf8e854b38b804db7549.dll,#1
1⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
PID:2128

C:\Windows\system32\rekeywiz.exe
C:\Windows\system32\rekeywiz.exe
1⤵
PID:2868

C:\Users\Admin\AppData\Local\HE6\rekeywiz.exe
C:\Users\Admin\AppData\Local\HE6\rekeywiz.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2872

C:\Windows\system32\spreview.exe
C:\Windows\system32\spreview.exe
1⤵
PID:2532

C:\Users\Admin\AppData\Local\wZVGb\spreview.exe
C:\Users\Admin\AppData\Local\wZVGb\spreview.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:2164

C:\Windows\system32\DisplaySwitch.exe
C:\Windows\system32\DisplaySwitch.exe
1⤵
PID:1816

C:\Users\Admin\AppData\Local\83Tx\DisplaySwitch.exe
C:\Users\Admin\AppData\Local\83Tx\DisplaySwitch.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks whether UAC is enabled
PID:1988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Accessibility Features

1

T1546.008

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Accessibility Features

1

T1546.008

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\83Tx\slc.dll

Filesize
704KB

MD5
48539273dc345606c1fa69ee468e0d3f

SHA1
20f36a167f6be2d6d1bb0d99ef57f2d1f119ef19

SHA256
e2a8e23f63c1e3ff859353a7ed6f77c45efe100d57f21158235d50d4afbbe31c

SHA512
03eb194aa9076708c7907572c0cab77e174838dd7e6d531d6b0925dbd7f95e034b0871fafa8b81f8225b3059c9a4eac1264abbac4f2f390aa80512566d24e687

Download Submit
C:\Users\Admin\AppData\Local\HE6\slc.dll

Filesize
704KB

MD5
5a7b5be4a67239eb1e5432561d22fb18

SHA1
27f75fc3a58f3901f0a3c5b5a3abf810d93b6d64

SHA256
e768cb174fe878a5de69c93cae742b9ba5a3fee6a2ef49df89111504812b70d1

SHA512
0850d0e58dae25a93a7609a4476eb81d5d2b34e58d058df844d89c4740b6f9f660f0b70252eacb50c950d6abad5d85aac822d59d66fdcbb9a0a9aae3ef61b8ec

Download Submit
C:\Users\Admin\AppData\Local\wZVGb\WINBRAND.dll

Filesize
704KB

MD5
c2a45924fe44863992d7a3a62a4f5943

SHA1
640d7404a8d3ba60f895d438f2e6a0b26b30addb

SHA256
e22a6e370adc5eb209e5f361a5da29d4e8eaccf87dc7550586284bf84f113e09

SHA512
bb74c78f4b22b14f18afea51a4937ffaed102bb5fbdb867aebb326bca46d0d58616bc3ae03a7b75e85c579b053dd72ea8315f05b59a0eab72eb77f4e948adda2

Download Submit
C:\Users\Admin\AppData\Roaming\MICROS~1\Windows\STARTM~1\Programs\Startup\Wbvsyha.lnk

Filesize
1KB

MD5
d47efb26d0d86b4fdfd72ff4f7b145bb

SHA1
24515a8bd089876aa80f34d4ade6ae4fd3fee0b2

SHA256
6642a0b41dcac0550d6aedd14aa6a972af19c4bfecc52c809635da9dc9967f82

SHA512
c65513e723936b8424bb568d646fe72f24f084192dc4e2e4d07c28a13f0ed8334679a1bff8940b0fcc3174252b265f5c26db8464f409f21e19adffb34241c5e8

Download Submit
\Users\Admin\AppData\Local\83Tx\DisplaySwitch.exe

Filesize
517KB

MD5
b795e6138e29a37508285fc31e92bd78

SHA1
d0fe0c38c7c61adbb77e58d48b96cd4bf98ecd4a

SHA256
01a9733871baa8518092bade3fce62dcca14cdf6fc55b98218253580b38d7659

SHA512
8312174a77bab5fef7c4e9efff66c43d3515b02f5766ed1d3b9bd0abb3d7344a9a22cbac228132098428c122293d2b1898b3a2d75f5e4247b1dcb9aa9c7913b1

Download Submit
\Users\Admin\AppData\Local\HE6\rekeywiz.exe

Filesize
67KB

MD5
767c75767b00ccfd41a547bb7b2adfff

SHA1
91890853a5476def402910e6507417d400c0d3cb

SHA256
bd70e504871a2ac1c883d19b87970c8d1b8b251c784bf777ba77ed764f5f2395

SHA512
f096043452a1aa213a5e4d62638de3ee4b0b3ad3d12b7ee0372d8c79e00e2e13b4fd0ebc4206bbdb5124bed292dd5b30ef1641288046ef835f89c332985154f9

Download Submit
\Users\Admin\AppData\Local\wZVGb\spreview.exe

Filesize
294KB

MD5
704cd4cac010e8e6d8de9b778ed17773

SHA1
81856abf70640f102b8b3defe2cf65669fe8e165

SHA256
4307f21d3ec3b51cba6a905a80045314ffccb4c60c11d99a3d77cc8103014208

SHA512
b380264276bad01d619a5f1f112791d6bf73dc52cdd5cca0cc1f726a6f66eefc5a78a37646792987c508f9cb5049f0eb86c71fb4c7a2d3e670c0c8623f0522ee

Download Submit
memory/1200-26-0x0000000077AD0000-0x0000000077AD2000-memory.dmp

Filesize
8KB

Download
memory/1200-23-0x0000000002E80000-0x0000000002E87000-memory.dmp

Filesize
28KB

Download
memory/1200-14-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-13-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-12-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-11-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-8-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-7-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-24-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-6-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-25-0x0000000077AA0000-0x0000000077AA2000-memory.dmp

Filesize
8KB

Download
memory/1200-37-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-36-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-10-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-45-0x0000000077836000-0x0000000077837000-memory.dmp

Filesize
4KB

Download
memory/1200-15-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-9-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/1200-3-0x0000000077836000-0x0000000077837000-memory.dmp

Filesize
4KB

Download
memory/1200-4-0x0000000002EA0000-0x0000000002EA1000-memory.dmp

Filesize
4KB

Download
memory/1988-90-0x0000000140000000-0x00000001400B0000-memory.dmp

Filesize
704KB

Download
memory/2128-44-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/2128-2-0x0000000000110000-0x0000000000117000-memory.dmp

Filesize
28KB

Download
memory/2128-0-0x0000000140000000-0x00000001400AF000-memory.dmp

Filesize
700KB

Download
memory/2164-74-0x0000000140000000-0x00000001400B0000-memory.dmp

Filesize
704KB

Download
memory/2872-58-0x0000000140000000-0x00000001400B0000-memory.dmp

Filesize
704KB

Download
memory/2872-54-0x0000000140000000-0x00000001400B0000-memory.dmp

Filesize
704KB

Download
memory/2872-53-0x00000000001F0000-0x00000000001F7000-memory.dmp

Filesize
28KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads